From £2,288
Relax... you have found a reliable extension builder in Lee-on-the-solent. BRIAN NEWLYN BUILDERS is a friendly and reliable company based in Lee-on...
From £2,176
O NEILL CONSTRUCTION LTD is an established extension buildering business in Lee-on-the-solent. We come highly recommended and provide competitive q...
From £2,216
HISTORIC BUILD RESTORATION LTD are here to help customers who need an Extension Builder in Lee-on-the-solent. We offer a competitive rate to comple...
From £2,128
Relax... you have found a reliable extension builder in Lee-on-the-solent. MA Builders is a friendly and reliable company based in Lee-on-the-solen...
From £2,136
Trusted and professional extension builder in Lee-on-the-solent. Experienced in all extension buildering work and keeping within budget and on quot...
From £2,200
We are experts in cavity wall insulation, cavity wall insulation removal, loft insulation, loft boarding, room in roof insulation, chemical damp pr...
From £1,952
Allweather Building Services Ltd are here to help customers who need an Extension Builder in Lee-on-the-solent. We offer a competitive rate to comp...
From £2,136
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,072
Need an Extension Builder in Lee-on-the-solent? GRL Building Services Ltd has been helping local clients (20 mile radius) with their extension buil...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Lee-on-the-solent it ranges from £1,952 (Allweather Building Services Ltd based in PO12) to £2,288 (BRIAN NEWLYN BUILDERS based in PO13).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in Lee-on-the-solent by posting a job with HaMuch and we will send it to extension builders in Lee-on-the-solent.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Lee-on-the-Solent | £35 | £249 |
| Install An RSJ near Gosport | £35 | £246 |
| Install An RSJ near Fareham | £35 | £250 |
| Install An RSJ near Portsmouth | £36 | £250 |
| Install An RSJ near Locks Heath | £33 | £240 |
| Install An RSJ near Isle of Wight | £34 | £246 |
| Install An RSJ near Hedge End | £34 | £244 |
| Install An RSJ near Waterlooville | £36 | £250 |
| Install An RSJ near Havant & Waterloo | £35 | £248 |
| Install An RSJ near Havant | £35 | £249 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,433

Two storey extension - £87,899

Build a timber frame extension - £25,933

Build a swimming pool - £80,933

Single storey extension - £53,656

Side return extension - £40,744

Install an RSJ - £2,133

Outbuilding - £9,933

Build a Mansard loft conversion - £51,933

Loft conversion - £33,120

Build a kitchen extension - £41,933

Hip to gable loft conversion - £41,933

Granny annexe - £86,933

Garden office - £9,933

Convert a Garage - £15,933

Garage - £18,433

Build a flat roof extension - £21,933

Build a dormer loft conversion - £41,933

Concrete foundations - £6,183

Convert a bungalow loft - £28,933

Convert a basement - £36,744